Free Online Calculator – Fast & Easy Math Tools

Perform essential math operations for daily calculations. Perfect for homework, budgeting, and quick calculations.

Free percentage calculator. Quickly find percentage increase, decrease, change, or what percent of a number another number is. Easy & accurate.

Free online square root calculator (radical calculator) to find the square root of any number. Calculate √x with precision and learn the mathematical principles behind square roots and radicals.

Calculate fillet (rounded corner) geometry from radius, chord, arc length, sagitta or angle. Visualize the arc, get sector/segment area, and export SVG. Units: mm/cm/in/px.

Calculate the area of seven common shapes: rectangle, triangle, trapezoid, circle, sector, ellipse, and parallelogram. Perfect for geometry, construction, and land measurement.

Free Triangle Area Calculator to find area using sides, base-height, angles, or coordinates. Quick, accurate, and easy tool for students and professionals.

Calculate scalene triangle area using Heron's formula with three sides. Enter side lengths for unequal-sided triangles to get exact area instantly. Perfect for geometry, engineering, and math homework.

Find triangle area using base and height with this free calculator. Quick and accurate results for geometry practice, engineering, or homework problems.

Calculate triangle area with two sides and the included angle using sine formula. Easy and accurate solution for trigonometry and geometry problems.

Compute triangle area using two angles and one side. Apply law of sines to find area quickly. Ideal for trigonometry and geometry study help.

Calculate triangle area using vertex coordinates with this free tool. Enter three points (x,y) to get exact area instantly for math or CAD work.

Free Right Triangle Area Calculator. Find area using base and height or two legs instantly. Great for math students and quick geometry checks.

Perform binary arithmetic operations with step-by-step visualization. Supports addition, subtraction with carry/borrow annotations.

Calculate 1's complement (one's complement) by flipping every bit of a binary or decimal number under a fixed bit width (8/16/32/64). View results in binary, decimal, and hexadecimal formats with bit-by-bit visualization.

Calculate 2's complement (two's complement) for representing negative numbers in binary. Convert between binary, decimal, and hexadecimal with 8/16/32/64-bit support and step-by-step visualization.

Plan your borrowing with precision. Calculate monthly payments, total interest costs, and loan affordability for any type of loan.

Convert between 150+ world currencies with real-time exchange rates. Essential for international travel, online shopping, business transactions, and investment analysis. Get accurate conversion rates updated throughout the day.

Calculate tips and split bills with friends and family. Include or exclude taxes and service charges, round amounts for convenience.

Free online Mortgage Calculator to estimate monthly payments including principal, interest, taxes, insurance, and HOA fees. Compare different down payments and loan terms to find affordable home financing.

Free Car Loan Calculator to estimate monthly payments, total interest, and payoff schedule. Adjust loan amount, rate, and term to plan your auto financing.

Free Personal Loan Calculator to estimate monthly payments, total interest, and payoff schedule. Adjust loan amount, rate, and term to plan your finances.

Free Student Loan Calculator to estimate monthly payments, total interest, and payoff date. Plan repayment strategies and compare different loan options.

Free Business Loan Calculator to estimate monthly payments, interest costs, and amortization schedule. Adjust loan amount and term to plan cash flow.

Free HELOC Calculator to estimate your home equity line of credit, monthly payments, and interest costs. Explore borrowing options and repayment terms.

Forecast SCHD dividends and total returns. Calculate DRIP reinvestment, yield on cost, and passive income growth with our simple tool.

Free online BMI Calculator to check your Body Mass Index and find out if you're underweight, normal, overweight, or obese. Quick and accurate results!

Free online Age Calculator to calculate your exact age in years, months, and days from your date of birth. Quick, accurate, and easy to use!

Free online time calculator to find the difference between two dates or add/subtract years, months, days, hours, minutes, and seconds from any date.

Calculate the exact duration between two dates and times. Free time duration calculator for precise time span calculations, travel planning, and project timelines.

Calculate how long it takes to finish an audiobook at different playback speeds. Find out time saved and estimated completion date based on your daily listening habits.

Calculate the maximum audiobook length you can complete based on available time and playback speed. Perfect for planning your reading schedule and book selection.

Calculate your GPA and course grades with weighted assignments. Track academic performance and plan study strategies.

Calculate the perfect sugar syrup ratio for beekeeping and food preservation. Free online tool for making sugar syrup solutions for bees and cooking.

Estimate how far your boat or vehicle can travel based on tank capacity, fuel burn rate, and speed. View range in NM, miles, and kilometers.

Calculate the perfect oil-to-gas ratio for your 2-stroke engine. Supports 50:1, 40:1, 32:1 ratios for chainsaws, outboards, dirt bikes, and more.

Easily calculate how much 2-stroke oil to mix with gas at a 50:1 ratio. Perfect for chainsaws, outboards, trimmers, and other small engines.

Calculate how much 2-stroke oil to mix with gasoline at a 25:1 ratio. Learn why older engines and vintage tools require this richer oil mixture.

Quickly find how much 2-stroke oil to mix with gas at a 32:1 ratio. Ideal for older chainsaws, trimmers, and high-RPM tools.

Find the right 2-stroke fuel mix at 40:1. Learn why this balanced ratio protects engines while reducing smoke.

Estimate your boat trip distance, time, and fuel use. Enter speed and distance to plan your voyage efficiently.

Estimate boat fuel use per hour and per distance. Enter power, fuel type, speed, and trip to get L/h, GPH, total fuel, cost, and range.

Estimate Mercury outboard engine fuel consumption by model, RPM, speed, and conditions. Get L/h, GPH, fuel per mile, total fuel, and trip cost for FourStroke, Pro XS, Verado, SeaPro, and Racing.

Estimate Mercury 600 Verado V12 fuel consumption by RPM, load, speed, and sea state. Get L/h, GPH, fuel per mile, total fuel, and trip cost with cruise guidance.

Estimate Mercury 400 Verado V10 fuel consumption by RPM, load, speed, and sea state. Get L/h, GPH, fuel per mile, total fuel, and trip cost with prop guidance.

Estimate Mercury Racing 500R fuel consumption by RPM, load, speed, and sea state. Get L/h, GPH, fuel per mile, total fuel, and trip cost with safety margins.

Quickly and accurately convert between square meters, hectares, square kilometers, acres, and square feet for various area calculations.

Free Indiana Credit Time Calculator: estimate projected release date using class levels (A/B/C/D), jail credits, good-time accrual, and disciplinary losses. Educational use only; not legal advice.

Free Ohio Credit Time Calculator: estimate sentence reduction using earned credits (1 or 5 days per month, capped at 15%), jail-time credit, and disciplinary losses. Educational estimate only; not legal advice.

Estimate sentence credits under the Texas Department of Criminal Justice (TDCJ) rules. Visit our Texas Good Time Calculator for complete features.

Use our Texas Good Time Calculator to estimate sentence reductions under the Texas Department of Criminal Justice (TDCJ) system. Based on Texas Gov. Code §498.003.

Estimate inmate release dates under Alabama's CIT Act (§14-9-41). Calculate good time credits based on offense class and 2023 amendments. Free calculator for Alabama DOC sentences.

Calculate Florida gain-time credits (basic, incentive, meritorious) under § 944.275. Includes forfeitures and 85% minimum rule. Free tool for Florida DOC sentence estimates.

Estimate California county jail time served using presentence custody credits and conduct credit caps (PC 4019 standard 50%, PC 2933.1 violent 15%, PC 2933.2 murder 0%). Educational tool only.

Use our Virginia Jail Time Calculator to estimate sentence reductions under Virginia's Earned Sentence Credit system. Based on Va. Code §53.1-202.3. For educational use only.

Calculate earned sentence credits and release eligibility under T.C.A. §41-21-236 and §40-35-501. Month-based Tennessee jail time calculator. Educational use only.

Estimate jail time and release date for Level 1 felonies in Indiana. Based on Indiana Code §35-50-2-4 and IDOC credit class rules for serious offenses.

Estimate jail time, sentence reduction, and release date for a Level 2 felony in Indiana. Based on IDOC credit-class rules and Indiana Code §35-50-2-4.5.

Estimate jail time, sentence reduction, and release date for a Level 3 felony in Indiana. Based on IDOC credit class rules and Indiana Code §35-50-2-5.

Estimate release eligibility for Indiana Level 4 felonies. Enter sentence length, jail credit, and credit class to calculate expected time served under Indiana Code § 35-50-2-4.

Estimate release eligibility for Indiana Level 5 felonies. Enter sentence length, offense date, and incarceration start date to calculate expected jail time under Indiana Code § 35-50-2-6.

Estimate release eligibility for Indiana Level 6 felonies under Indiana Code § 35-50-2-7. Enter sentence length, jail credit, and credit class to calculate expected time served.

Estimate Oregon Class A felony sentencing using the state's guidelines grid. See statutory maximum (20 years), typical PPS, fine limits, and whether certain offenses carry Measure 11 mandatory minimums. Educational tool — not legal advice.

Estimate Oregon Class B felony sentencing using the state's guidelines grid. See statutory maximum (10 years), PPS from applicable grid cells, fine limits, and whether certain offenses carry Measure 11 mandatory minimums. Educational tool — not legal advice.

Estimate Oregon Class C felony sentencing using the state's guidelines grid. See statutory maximum (5 years), PPS from applicable grid cells, fine limits, and whether certain offenses carry Measure 11 mandatory minimums. Educational tool — not legal advice.

Calculate presumptive sentencing ranges under Oregon Sentencing Guidelines. Select crime seriousness level (1-11) and criminal history category (A-I) to determine standard sentencing ranges.

Instantly calculate Oregon Measure 11 mandatory minimum sentences under ORS 137.700. Includes Murder, Rape, Assault, Robbery, and Kidnapping offenses.

Find Oregon's mandatory minimum and maximum sentences for Assault in the First Degree under Measure 11 (ORS 163.185). Learn about the 90-month minimum term and related penalties. For educational use only — not legal advice.

See the 70-month mandatory minimum and heuristic estimate for Oregon Assault 2 (ORS 163.175). Educational tool — not legal advice.

Estimate sentencing outcomes for Oregon Assault in the Third Degree (ORS 163.165) under the state's sentencing guidelines. Learn about presumptive ranges, PPS, and legal context.

Calculate sentencing estimates for Assault in the Fourth Degree (ORS 163.160) in Oregon. Covers both misdemeanor and felony-enhanced cases under the Oregon Sentencing Guidelines.

Compare Oregon Manslaughter 1 and 2 sentencing guidelines under ORS 163.118 and 163.125. Understand Measure 11 minimums and grid-based ranges with our free educational calculator.

Estimate sentences for Manslaughter in the First Degree under Oregon law (Measure 11 minimum 120 months). Includes grid-based ranges and post-prison supervision.

Estimate Oregon Manslaughter in the Second Degree sentencing ranges using the Oregon Sentencing Guidelines Grid. Includes aggravating and mitigating factors.

Calculate sentencing ranges for Burglary in the First Degree in Oregon using the sentencing grid. Includes criminal history categories, aggravating factors, and presumptive ranges

Calculate the sentencing ranges for Burglary in the Second Degree (Class C felony) using the sentencing grid. View presumptive grid ranges by criminal history.

Estimate the presumptive sentence range for Theft in the First Degree in Oregon. Includes aggravating factors, property value impact, and Oregon sentencing grid guidance.

Free Oregon Theft in the Second Degree sentencing calculator (Class A misdemeanor). Estimate jail days, see statutory maximums, and learn how factors may influence outcomes.

Free Oregon Theft in the Third Degree calculator (Class C misdemeanor). Check statutory maximums and educational suggested jail range. Not legal advice.

Free calculator for Oregon Aggravated Theft in the First Degree (Class B felony). Estimate grid ranges by criminal history and see how aggravating factors may influence outcomes.

Estimate felony sentencing ranges in Washington State using the Sentencing Reform Act grid (RCW 9.94A). Enter offense level and offender score to calculate the presumptive range.

Estimate jail time for an Assault 1 conviction in Washington State. Uses RCW 9A.36 sentencing grid to calculate prison range, felony class, and enhancements for serious violent offenses including deadly weapon use.

Estimate jail time for an Assault 2 conviction in Washington State. Uses RCW 9A.36 sentencing grid to calculate prison range, felony class, and enhancements for violent felonies involving serious bodily injury.

Estimate jail time for an Assault 3 conviction in Washington State. Uses RCW 9A.36 sentencing grid to calculate prison range, felony class, and enhancements for assaults on police, firefighters, or public servants.

Estimate jail time for an Assault 4 conviction in Washington State. Uses RCW 9A.36 sentencing grid to calculate prison range, felony class, and enhancements for misdemeanor and felony domestic violence cases.

Estimate sentencing ranges for Robbery 1 and 2 offenses in Washington State using the official sentencing grid (RCW 9A.56.200 & 9A.56.210). Includes firearm and deadly-weapon enhancements per RCW 9.94A.533.

Estimate jail or prison time for Burglary 1, Residential Burglary, or Burglary 2 in Washington State using the official 2024 sentencing grid. Includes felony class, offense level, and enhancements.

Estimate the presumptive sentencing range for Vehicular Homicide in Washington State using the 2024 sentencing grid. Covers DUI, reckless, and disregard variants under RCW 46.61.520 with Offender Score and enhancements.

Use our Washington DUI sentencing grid calculator to estimate minimum/maximum jail time, fines, electronic home monitoring, license suspension/revocation, and ignition interlock. Updated to the Washington Courts August 2024 grid.

Estimate potential jail time, fines, and probation for a Class A misdemeanor in Oregon. Learn sentencing ranges, expungement eligibility, and penalties for first offenses under ORS 161.615 and 161.635.

Calculate jail time and fines for Class B misdemeanors in Oregon. Understand sentencing limits, examples (harassment, disorderly conduct), and expungement rules based on ORS 161.615(2) and 161.635(1)(b).

Find sentencing and fine ranges for Class C misdemeanors in Oregon. Includes jail time, probation eligibility, and expungement waiting periods under ORS 161.615(3) and 161.635(1)(c).

Estimate potential sentencing ranges, fines, and record-clearing eligibility for gross misdemeanors in Washington State. Understand sentencing limits under RCW 9A.20.021, fines up to $5,000, and maximum jail time up to 364 days.

Estimate sentencing ranges, fines, and probation terms for Washington State Misdemeanor offenses under RCW 9A.20.021. This calculator provides educational estimates only and does not constitute legal advice.

Convert between file size units (bytes, KB, MB, GB, TB, PB) and compare storage sizes. Free online file size converter tool.