Every calculation.
One hive.
CalcuHive is an ever-growing library of free calculators and everyday browser tools — built for speed, absolute privacy, and zero sign-ups. New additions land regularly, so it's worth bookmarking.
Start with these
A few of the calculators people use most — with more joining the hive over time.
GST Calculator
Add or remove 10% GST from any amount in seconds.
Open calculatorDiscount Calculator
Work out the sale price and total savings on any percentage off.
Open calculatorPercentage Calculator
Find a percentage of a number, or work out the percentage change between two.
Open calculatorEveryday tools worth bookmarking
Fast, private, browser-based tools — a few favourites to start with.
Merge PDF
Combine multiple PDFs into one file, right in your browser — nothing uploaded.
Open toolImage Compressor
Shrink JPEG, PNG, and WebP files with no file-count or size limit.
Open toolQR Code Generator
Custom QR codes with your own colors, a logo, and vector download.
Open toolBuilt like a hive — fast, orderly, no waste
Built for speed
Every tool calculates or converts as you go — no page reloads, no waiting.
Private by design
Most tools run entirely in your browser — your files and data are never uploaded.
Always free
No sign-ups, no paywalls, no artificial limits — open a tool and use it.
Growing every week
New calculators and tools land regularly — this is a hive that keeps building.
Which tool should we build next?
We're adding new tools every week — tell us what you need most.