Other calculators
This hub collects tools that do not sit in a larger subject family—utilities and one-off helpers still get a How it works note.
Browse the list for the job you need, or search the catalog if you already know the name.
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Other
Aspect Fit Calculator
Scale an image to fit inside a box (contain).
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Other
Dice Roller
Roll one or more dice with a chosen number of sides.
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Other
Download Time Calculator
Estimate download duration from file size and link speed.
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Other
GPA Planning Calculator
GPA needed in remaining credits to hit a target cumulative GPA.
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Other
Gas Mileage Calculator
Miles per gallon (and L/100 km) from distance and fuel used.
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Other
Grade Calculator
Weighted average grade from up to five score/weight pairs.
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Other
Height Calculator
Convert height between centimeters and feet/inches.
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Other
IP Subnet Calculator
IPv4 network, netmask, broadcast, and host count from CIDR.
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Other
Password Entropy Calculator
Bits of entropy from length and charset size (with presets).
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Other
Pregnancy Calculator
Estimated due date and gestational age from LMP (Naegele).
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Other
Prime Number Calculator
Check whether an integer is prime.
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Random Number Generator
Generate a random integer in an inclusive min–max range.
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Other
Text Stats Calculator
Live character, word, sentence, line, and reading-time stats.
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Other
Tip For Groups Calculator
Tip and per-person total for a shared bill.
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Other
Unit Price Compare Calculator
Compare unit prices of two packages.
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