Free Online Calculators
Free online calculators
Search, resume recent tools, or browse the most-used calculators across finance, health, maths, dates, and everyday topics.
Find free online calculators for mortgages, loans, BMI, calories, age, percentages, date differences, and hundreds of other everyday questions. Start with a broad topic, narrow into the right subcategory, and open a calculator that gives immediate results with clear follow-on guidance when you need more context.
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Start with the calculators people use most.
Energy Availability Calculator
Use this energy availability calculator to calculate EA, screen for low energy availability (LEA) and RED-S risk, compare intake and exercise-load scenarios.
Body Shape Calculator
Use this body shape calculator to identify your body type from shoulders, bust or chest, waist, and hip measurements, then interpret waist-to-hip.
MET Calculator
Use this MET calculator to convert metabolic equivalent values into calories burned, gross vs net exercise calories, VO2-equivalent oxygen demand.
Easter Date Calculator
Use this Easter date calculator to find when Easter Sunday falls, compare Western and Orthodox Easter, review Holy Week dates, and scan nearby years.
Sweepstake Generator
Use this sweepstake generator to randomly assign teams, prizes, horses, or numbers to names, including shared-entry draws for oversized office pools.
Average Speed Calculator
Use this average speed calculator to work out trip average speed from distance and time, compare moving speed with stop-inclusive averages.
Recently added or updated
Fresh tools and improvements.
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GFR Calculator
Calculate eGFR with CKD-EPI 2021 race-free creatinine and optional creatinine-cystatin C equations, then interpret kidney stage, urine ACR.
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Live Currency Converter
Use this live currency converter to fetch the latest ECB-based exchange rate, compare direct and reciprocal quotes.
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Qr Code Generator
Create a free static QR code in your browser for URLs, WiFi, vCards, email, SMS, WhatsApp, phone numbers, map locations, events, or text with logo, color.
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Password Generator
Generate strong random passwords or memorable passphrases locally in your browser, with password manager presets, batch output, entropy estimates.
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Ellipse Calculator
Calculate ellipse area, approximate perimeter, eccentricity, foci, vertices, shifted standard-form equation, diameter, aspect-ratio.
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Emotional Intelligence Test Calculator
Take an emotional intelligence test, see your EQ score, compare self-awareness, self-regulation, motivation, empathy, and relationship-management skills.
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