Path 01
Prices, discounts, and bills
Calculate percentages, discounts, tax, tips, and comparable package prices.
25 tools online
Calculator Tools
Practical calculators for health, prices, travel, finance, units, and everyday decisions.
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Choose the calculator for your task
Start with the decision or calculation you need. Every calculator also remains available in the complete directory below.
Path 02
Loans and savings
Estimate fixed payments, mortgage costs, compound growth, and savings timelines.
Path 03
Work, study, and business
Compare pay, weighted grades, margin and markup, or a simple break-even point.
Path 04
Health and time
Check BMI, calendar age, running pace, or elapsed time with stated assumptions.
Path 05
Measurements and numeric data
Convert units, solve ratios, scale dimensions, summarize values, or estimate data transfer time.
Path 06
Travel and energy costs
Estimate trip fuel expense or device electricity use from your own rates.
All calculator tools
Browse the complete collection, including specialized utilities that do not fit a single workflow.
BMI Calculator
Calculate BMI in metric or imperial units with clear ranges.
Calculator ToolsOnline
Age Calculator
Calculate calendar age in years, months, days, and total days.
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Percentage Calculator
Calculate percentages, ratios, increases, and decreases instantly.
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Loan Calculator
Estimate fixed monthly payments, total interest, and repayment cost.
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Compound Interest Calculator
Project compound growth across rates, terms, and frequencies.
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Tip Calculator
Calculate a tip and split the complete bill between people.
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Unit Converter
Convert common length, weight, and temperature measurements.
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Discount Calculator
Calculate savings, discounted price, tax, and final cost.
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Sales Tax Calculator
Add tax to a price or separate included tax from a total.
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Fuel Cost Calculator
Estimate trip fuel quantity and cost in metric or US units.
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Mortgage Calculator
Estimate monthly fixed-rate mortgage payments, housing costs, and total interest.
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Savings Goal Calculator
Project how monthly contributions may grow toward a savings target.
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Margin & Markup Calculator
Compare gross profit, margin percentage, and markup percentage.
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Time Duration Calculator
Calculate elapsed days, hours, minutes, and seconds between times.
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Running Pace Calculator
Convert distance and elapsed time into pace and average speed.
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Hourly to Salary Calculator
Convert hourly pay into weekly, monthly, and annual gross estimates.
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Electricity Cost Calculator
Estimate device energy use and cost from watts and time.
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Weighted Grade Calculator
Combine scores with explicit weights and compare points.
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Break-Even Calculator
Estimate unit volume needed for contribution to cover fixed costs.
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Unit Price Comparison Calculator
Compare two package prices using one shared quantity unit.
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Statistics Calculator
Calculate mean, median, mode, range, variance, and standard deviation online.
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Ratio Calculator
Simplify multi-part ratios and solve a proportional fourth value.
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Aspect Ratio Calculator
Reduce an aspect ratio and scale width or height proportionally.
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Data Transfer Time Calculator
Estimate ideal transfer time from data size and connection speed.
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Random Number Generator
Generate unbiased random integers with an optional no-repeat rule.
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