CLUSTER ARITHMETIC-CALCULATOR-OPERATIONS · 26 ENTRIES · EARLIEST ENTRY 2026-07-19
Web-based calculator tools
This cluster consists of web-based calculator tools, ranging from basic arithmetic to specialized functions like pottery calculations, z-scores, fertilizer amounts, and combinations. The dated history before the index start is too thin to discern a trend, with only four dated entries and fifteen undated. Traction leaders are Calculator- (1 star), calculator and kalkulator.vue (0 stars each).
Entry timeline
ENTRY TIMELINE
Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.
Members by activity
Activity signals, not revenue.
Build origin · 5 ai-built · 1 hand-coded · 14 unlabelled
Operator · 7 hobby · 13 unlabelled
Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 20 listed below. Unlabelled means nothing has decided yet — not that the answer is small.
- 01calculator0★26 dayslivehobbyWeb calculator for performing basic arithmetic operations in the browser.
- 02responsive-web-calculator0★21 dayslivehobbyWeb calculator that performs basic arithmetic operations and adapts to any screen size.
- 03kalkulator.vue0★1 molivehobbyWeb calculator that performs basic arithmetic operations in the browser.
- 04Calculator-1★2 mo—ai-builtSimple web-based calculator for arithmetic operations.
- 05ion-calculator0★3 mo—hobbyOnline calculator that computes ion concentrations for chemical solutions and reports mineral values.
- 06react-calculator-with-history-and-supabase0★5 mo—hand-codedA web-based calculator that stores calculation history in a backend.
- 07cool-calculator-service0★1 yrabandoned—ai-builtOffers a simple online calculator for quick arithmetic operations.
- 08calculadora-combinacoes0★1 yrabandonedlivehobbyWeb calculator that computes combinations (n choose k) for given inputs, aiding in math and probability problems.
- 09Calcu-Plus0★unknownliveProvides a simple calculator for basic arithmetic operations.
- 10Calculator0★unknownliveSimple web calculator for performing basic arithmetic operations.
- 11custom-cas-calculator-lavall.replit.app0★unknownliveai-builtWeb-based calculator for a specific custom purpose, hosted on Replit.
- 12calculator0★unknownlivehobbyWeb calculator that allows users to perform basic arithmetic operations like addition, subtraction, multiplication, and division.
- 13Calculator0★unknownlivehobbyWeb calculator that performs basic arithmetic and lets users switch between three theme options.
- 14Pottery Calculator0★unknownliveWeb calculator for performing pottery-related calculations.
- 15Dallmeier® calcD0★unknownliveProvides a web-based calculator for performing numerical calculations.
- 16Calculadora0★unknownliveWeb calculator that performs basic arithmetic operations.
- 17Matrix Visualizer0★unknownliveWeb calculator that performs interactive row operations on matrices with symbolic math support.
- 18CroxX Calculator0★unknownliveai-builtWeb calculator that determines liquid fertilizer application amounts based on input values.
- 19Variable Sum Calculator0★unknownliveai-builtCalculator tool that sums a variable, user-defined number of entered values.
- 20React App0★unknownliveWeb calculator with light and dark modes for performing basic arithmetic operations.
Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.