Other Calculators

GPA Calculator

Calculate your GPA for a semester or your cumulative GPA. Supports 4.0, letter grade, and percentage scales.

Grade Calculator

Calculate your final grade based on weighted assignments, tests, and exams. Find the grade you need on your final.

Dice Roller

Roll any number and type of dice: d4, d6, d8, d10, d12, d20, and custom sided dice.

Fuel Cost Calculator

Calculate trip, monthly, and annual fuel costs based on distance, MPG, and gas price.

Gas Mileage Calculator

Calculate MPG from odometer readings and gallons used. Estimate annual fuel costs at any MPG.

Wind Chill Calculator

Calculate wind chill temperature using the NWS formula. Includes frostbite risk time and wind chill reference table.

Heat Index Calculator

Calculate apparent temperature using the NWS Rothfusz formula. Shows heat disorder risk category.

Roman Numeral Converter

Convert between Arabic and Roman numerals with step-by-step breakdown. Supports 1 to 3999.

Password Generator

Generate secure random passwords with custom length and character sets. Shows entropy and estimated crack time.

Love Calculator

Calculate love compatibility between two names. A fun compatibility test for entertainment.

Golf Handicap Calculator

Calculate your Golf Handicap Index using the World Handicap System formula. Enter up to 20 rounds.

BTU Calculator

Convert BTU to watts, kWh, calories, and joules. Calculate recommended AC size for any room.

Voltage Drop Calculator

Calculate wire voltage drop by AWG gauge, current, and length. Checks NEC 3% recommendation.

Horsepower Calculator

Convert horsepower to watts and kW. Calculate HP from torque and RPM or from electrical power.

Mileage Calculator

Calculate MPG from odometer readings. Estimate trip cost and annual fuel expenses.

Subnet Calculator

Calculate network address, broadcast address, usable host range, and subnet mask from IP address and CIDR notation.

Electricity Cost Calculator

Calculate how much any appliance costs to run per day, month, and year based on wattage and your electricity rate.

Carbon Footprint Calculator

Estimate your annual carbon footprint from driving, flights, home energy, and heating. Compare to the US average of 16 tons CO2.

Batting Average Calculator

Calculate batting average, on-base percentage (OBP), slugging percentage (SLG), and OPS for any baseball player.

Mortgage Points Calculator

Calculate the break-even period for buying mortgage discount points. See if paying points saves money over your planned stay.

Payback Period Calculator

Calculate the payback period for any investment or capital expenditure. Includes discounted payback period and cumulative cash flow table.

AP Score Calculator

Estimate your AP exam score from raw multiple-choice and free-response section scores. Covers 23 AP subjects with subject-specific cutoffs.

ACFT Calculator

Calculate your Army Combat Fitness Test score from raw event performance. All 6 events scored using the gender-neutral 2023 standard.

PFT Calculator

Calculate your USMC Physical Fitness Test score. Pull-ups or push-ups, plank, and 3-mile run scored 0-100 with class determination.

Freight Class Calculator

Determine NMFC freight class from shipment density. Calculate density (lb/ft³) from dimensions and weight, then look up the corresponding LTL class.

ERA Calculator

Calculate a pitcher's Earned Run Average (ERA) from earned runs and innings pitched. Includes MLB tier comparison and ERA classification.

Pool Salt Calculator

Calculate exactly how much pool salt to add to reach your target salinity. Includes bag count and brand-specific salt level targets.

Crosswind Calculator

Calculate crosswind component from runway heading, wind direction, and wind speed. For pilots: includes headwind/tailwind and aircraft max demonstrated limits.

Wordle Calculator

Calculate your Wordle win rate and average guesses from your distribution. Includes the best opening words and letter frequency analysis.

Chess Elo Calculator

Calculate Elo rating change after a chess game. Inputs: your rating, opponent rating, result, and K factor. Shows expected score and rating delta.

Saturn Return Calculator

Find your three Saturn return dates (ages 28-30, 57-60, 87-90) based on your birthday. Includes life themes and transit details.

Dunk Calculator

Find out if you can dunk based on your height, standing reach, and vertical jump. Calculate required vertical jump to dunk at any rim height.

Cross Stitch Calculator

Calculate cross stitch fabric size from pattern stitch count and fabric count. Outputs finished design size, fabric needed, and floss estimate.

Rock Mass Rating Calculator

Calculate Bieniawski RMR for rock mass classification. Sums UCS, RQD, spacing, condition, groundwater, and orientation scores into Class I-V.

APUSH Score Calculator

Estimate your APUSH (AP US History) exam score from raw multiple-choice and DBQ/LEQ/SAQ free-response points. Subject-specific cutoffs.

AP Lang Score Calculator

Estimate your AP English Language and Composition score from MC and 3 essay scores (synthesis, rhetorical analysis, argument).

AP Chem Score Calculator

Estimate your AP Chemistry exam score from MC and free-response section points. Subject-specific cutoffs and chemistry unit guidance.

AP Bio Score Calculator

Estimate your AP Biology exam score from MC and free-response points. Bio-specific cutoffs and pass-rate context for all 8 units.

AP World Score Calculator

Estimate your AP World History: Modern exam score from MC and DBQ/LEQ/SAQ free-response points. Subject-specific cutoffs.

AP Stats Score Calculator

Estimate your AP Statistics exam score from MC and 6 free-response questions including the investigative task. 50/50 weighted.

AP Psych Score Calculator

Estimate your AP Psychology exam score from 75 MC questions and 2 FRQs. MC-weighted at 66.7% with subject-specific cutoffs.

AP Calc AB Score Calculator

Estimate your AP Calculus AB exam score from MC (calc and no-calc) and 6 FRQs. Subject-specific cutoffs for AP Calc AB.

AP US Gov Score Calculator

Estimate your AP US Government and Politics score from MC and 4 FRQs. Subject-specific cutoffs with required SCOTUS cases reference.

APES Score Calculator

Estimate your AP Environmental Science (APES) exam score from MC and 3 FRQs. Subject-specific cutoffs across 9 environmental units.

AP Microeconomics Score Calculator

Estimate your AP Microeconomics exam score from MC and 3 FRQs. MC-weighted 66.7% with subject-specific cutoffs and graph mastery tips.

AP Macroeconomics Score Calculator

Estimate your AP Macroeconomics exam score from MC and 3 FRQs. Covers AD/AS, money market, and loanable funds graphs.

AP Physics 1 Score Calculator

Estimate your AP Physics 1 exam score from MC (including multi-correct) and 5 FRQs. Algebra-based mechanics with low pass rate.

AP Lit Score Calculator

Estimate your AP English Literature score from MC and 3 essays (poetry, prose, literary argument). Subject-specific cutoffs.

AP Human Geo Score Calculator

Estimate your AP Human Geography exam score from MC and 3 FRQs (each with 7 sub-parts). Subject-specific cutoffs.