Practical tools for measured work
Dice roller
Roll multiple dice with editable sides, individual results and a total.
Calculate the layout, check the diagram, then print the result for the shop or jobsite.
Choose the settings and generate a fresh result. Changing settings clears the previous result.
How it works
Both range endpoints are included. Each draw uses browser crypto with rejection sampling to avoid modulo bias. The unique mode samples without replacement and shuffles the selected values.
Each die has faces numbered from 1 through the chosen side count. Roll 1–100 dice, each with 2–1000 sides. Rolls are independent, so repeated faces are expected.
Limitations
Random results are not predictions and do not guarantee a particular long-run distribution in a short sample. Values are generated locally and are not saved between visits. No seed or replay sequence is provided.
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Random number generator
Generate bounded random integers with optional unique results using browser crypto.
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Calculate a percentage and letter grade with editable thresholds and extra-credit rules.
GPA calculator
Calculate credit-weighted GPA from numeric course points on your chosen scale.
Fraction calculator
Convert decimals and mixed numbers to exact fractions and perform fraction arithmetic.