Popular calculators
Start with some of the most useful everyday tools.
Percentage Calculator
Calculate percentages, percentage increases and decreases, ratios and percentage change.
💳Loan Calculator
Estimate loan payments and amortization, compare installment plans, or model an early-payoff settlement.
💱Currency Converter
Convert between major currencies using Hesapica’s current reference rates and see the rate source and update time.
🧍BMI Calculator
Calculate adult body mass index and the reference weight range associated with the standard BMI range.
🎂Age Calculator
Calculate calendar age or elapsed time with years, months, days, total hours and next-birthday timing.
📊Investment Return Calculator
Project long-term investment growth with contributions, fees and inflation, or analyze ROI for a completed investment.
Cars
3 global calculators
Car Monthly Cost Calculator
Estimate monthly car ownership cost from depreciation, fuel, insurance, maintenance, finance and optional EV battery reserve.
🛣️Cost per Kilometer Calculator
Estimate your real cost per kilometer from fuel, depreciation and annual ownership costs.
⛽Fuel Cost Calculator
Estimate fuel use, trip cost and fuel cost per kilometer from distance, consumption and fuel price.
Finance
6 global calculators
Debt Payoff Calculator
Plan multiple debts with avalanche or snowball strategies, extra payments, lump sums and payoff-time estimates.
💼Budget Calculator
Compare monthly income and expenses, see your remaining cash flow and track your savings rate.
💱Currency Converter
Convert between major currencies using Hesapica’s current reference rates and see the rate source and update time.
📈Inflation Calculator
Estimate how inflation changes future prices and the purchasing power of money over time.
🏦Interest Calculator
Calculate simple or compound interest with contributions, fee drag, future value and optional target timing.
💳Loan Calculator
Estimate loan payments and amortization, compare installment plans, or model an early-payoff settlement.
Business
1 global calculator
Property
2 global calculators
Rental Property Calculator
Estimate rental yield, net operating income, simple payback and a five-year rent, expense and property-value scenario.
🏡Home Affordability Calculator
Estimate a home-price budget from take-home or gross income, debts, down payment, rate, flexible loan term and ongoing housing costs.
Everyday
3 global calculators
Countdown Calculator
See exactly how much time remains until a future date and time.
🏷️Discount Calculator
Calculate the final price after a discount, an optional coupon and optional sales tax.
🧾Tip & Bill Split Calculator
Calculate tip, service fee, final total and per-person payment with optional round-up.
🐾 Pet Care & Calculators
Age, food, weight, care schedules and aquarium tools
Pet Care Hub
Guides and calculators for household pets.
🐾Aquarium Volume Calculator
Tank capacity and water-change amount.
🐾Animal Age & Life Stages
Life stage, maturity and lifespan across 80 species and groups.
🐾Pet Food Portion Calculator
Estimate daily energy and food portions.
🐾Pet Food Cost Calculator
Daily and annual pet food cost.
Education
1 global calculator
Mind & Logic
Reasoning challenges and brain exercises
Astrology
2 global calculators
Rising Sign Calculator
Find your tropical Rising Sign and exact Ascendant degree from birth date, time, place and historical time-zone rules.
☾Daily Horoscope
Build a deterministic daily astrology reading from your Sun sign, optional Rising Sign and the real planetary positions for the selected date.
Health
9 global calculators
Water Intake Calculator
Estimate a practical daily water target from body weight, activity time and hot-weather exposure.
⚖️Ideal Weight Calculator
Compare several commonly used ideal-weight formulas based on height and sex.
🔥Calorie Calculator
Estimate resting energy needs and daily maintenance calories using the Mifflin–St Jeor equation.
🧍BMI Calculator
Calculate adult body mass index and the reference weight range associated with the standard BMI range.
📏Body Fat Calculator
Estimate body fat percentage from tape measurements with the classic Navy circumference equations, with optional fat-mass and lean-mass breakdown.
🗓️Pregnancy Due Date Calculator
Estimate due date and gestational age from LMP, known conception or IVF embryo transfer dates.
🌱Ovulation Calculator
Estimate ovulation, fertile days and the next period from a regular-cycle pattern.
🌙Period Calculator
Project upcoming period start and end dates from your average menstrual-cycle pattern.
🏃Running Pace Calculator
Calculate pace, finish time or distance, with min/km, min/mile, speed and split tables for common race distances.
Utilities
1 global tool
Date & Time
5 global calculators
Days Between Dates Calculator
Calculate the number of calendar days, weeks and weekdays between two dates.
💼Business Days Calculator
Calculate working days between dates or add/subtract business days with custom weekends and public holidays.
⏱️Time Duration Calculator
Calculate time between clock times, add or subtract hours and minutes, convert durations, and find net work hours after breaks.
🎂Age Calculator
Calculate calendar age or elapsed time with years, months, days, total hours and next-birthday timing.
🌍Time Zone Converter
Convert a local date and time between world cities and IANA zones with daylight-saving rules and UTC offsets.
Investing
3 global calculators
Crypto Profit Calculator
Calculate crypto profit or loss after fees and compare price targets with market-cap and supply scenarios.
🪙Asset Return Calculator
Estimate profit, current value and return on investment for gold, currencies or other assets.
📊Investment Return Calculator
Project long-term investment growth with contributions, fees and inflation, or analyze ROI for a completed investment.
Math
3 global calculators
Average Calculator
Calculate arithmetic or weighted averages with median, quartiles, standard deviation and IQR outlier screening.
%Percentage Calculator
Calculate percentages, percentage increases and decreases, ratios and percentage change.
📐Unit Converter
Convert 14 categories of metric, Imperial and US units, including temperature, data and fuel economy.