
Astronomy CCD Calculator
Find approximate pixel scale and geometric full-sensor sky field.
Open toolFind full rectangular repeat counts and leftover margins on a canvas. Provide Canvas width, Canvas height, Repeat width to compute results directly in your browser. Unrotated, unoffset rectangular repeat grid; centered leftover margins shown per edge. No staggered patterns or packing optimization. Inputs and results use floating-point numbers; output shows up to 12 significant digits. Rounding can occur.
Enter the inputs, then select Calculate.
Result will appear here
The Pattern Repeat Calculator evaluates Canvas width, Canvas height, Repeat width in client-side JavaScript using the deterministic rule below and updates the output panel immediately without uploading data to a server.
Find full rectangular repeat counts and leftover margins on a canvas.
Unrotated, unoffset rectangular repeat grid; centered leftover margins shown per edge. No staggered patterns or packing optimization. Inputs and results use floating-point numbers; output shows up to 12 significant digits. Rounding can occur.
Review the input parameters, allowed value ranges, and worked reference cases for the Pattern Repeat Calculator below before running your calculation.
| Parameter / Scenario | Default / Sample Value | Rule or Allowed Range | Output / Usage Note |
|---|---|---|---|
| Input: Canvas width | 100 | Range: 1e-09 to 1000000000.0 | Required workspace parameter |
| Input: Canvas height | 70 | Range: 1e-09 to 1000000000.0 | Required workspace parameter |
| Input: Repeat width | 30 | Range: 1e-09 to 1000000000.0 | Required workspace parameter |
| Input: Repeat height | 20 | Range: 1e-09 to 1000000000.0 | Required workspace parameter |
| Worked Case 1: Baseline run (Canvas width = 100) | Preloaded / test values | Find full rectangular repeat counts and leftover margins on a canvas | Canvas width = 100; Canvas height = 70; Repeat width = 30; Repeat height = 20. The displayed output is Full repeats: 3 × 3 Horizontal margin per edge: 5 Vertical margin per edge: 5. |
| Worked Case 2: Comparison scenario (pattern repeat calculator fabric) | Preloaded / test values | Find full rectangular repeat counts and leftover margins on a canvas | Canvas width = 65; Canvas height = 44; Repeat width = 20; Repeat height = 15. The displayed output is Full repeats: 3 × 2 Horizontal margin per edge: 2.5 Vertical margin per edge: 7. |
Follow these three steps to configure Canvas width, Canvas height, Repeat width, verify unit and boundary rules, and export your Pattern Repeat Calculator output.
Set canvas height, repeat width, repeat height. Use an unrotated rectangular grid with no offset or stagger.
Select Calculate to see the full repeat counts and centered leftover margins. Copy result copies this text; Download saves it as a TXT file.
These concrete scenarios illustrate how the Pattern Repeat Calculator processes baseline inputs, comparison checks, and boundary constraints.
Canvas width = 100; Canvas height = 70; Repeat width = 30; Repeat height = 20. The displayed output is Full repeats: 3 × 3 Horizontal margin per edge: 5 Vertical margin per edge: 5.

Canvas width = 65; Canvas height = 44; Repeat width = 20; Repeat height = 15. The displayed output is Full repeats: 3 × 2 Horizontal margin per edge: 2.5 Vertical margin per edge: 7.

When solving for 'pattern repeat calculator', verify that Canvas width, Canvas height, Repeat width use consistent units and stay within the documented scope: Unrotated, unoffset rectangular repeat grid; centered leftover margins shown per edge. No staggered patterns or packing optimization. Inputs and results use floating-point numbers; output shows up to 12 significant digits. Rounding can occur.

The output panel reports the exact result derived from Canvas width, Canvas height, Repeat width alongside any unit or formatting notes.
The result is the full repeat counts and centered leftover margins. Check how many complete rectangular repeats fit on a canvas.
Only whole grid repeats fit; the tool does not rotate motifs or solve irregular packing layouts.
Numerical output shows up to 12 significant digits. Floating-point arithmetic and display rounding can affect the last digits.

Review these boundary constraints and validation rules before relying on the Pattern Repeat Calculator output.
Operational scope: Unrotated, unoffset rectangular repeat grid; centered leftover margins shown per edge. No staggered patterns or packing optimization. Inputs and results use floating-point numbers; output shows up to 12 significant digits. Rounding can occur. Inputs that violate minimum/maximum bounds or required format rules are rejected with a clear diagnostic prompt.
Need an adjacent calculation in Everyday Math? Use the related tools linked below to chain your workflow without leaving your browser.


Find approximate pixel scale and geometric full-sensor sky field.
Open tool
Find stitched design and fabric-cut dimensions from stitch counts and fabric count.
Open tool
Calculate curtain fabric yardage or meters, number of fabric widths, and cut drop length from rod width, drop, fullness, and pattern repeat.
Open toolChoose another tool for your next calculation, conversion, or text task.

Find simple payback period as investment divided by annual net cash inflow.
Open tool
Small-angle pendulum period = 2π × √(length / gravity).
Open tool
Find stitch and row gauge and unrounded counts for supplied target dimensions.
Open tool
Find full portions, leftovers and an even daily mass allocation.
Open toolAnswers about using Pattern Repeat Calculator and understanding its results.
The Pattern Repeat Calculator applies the rule: Find full rectangular repeat counts and leftover margins on a canvas. Enter Canvas width, Canvas height, Repeat width into the workspace and the tool computes the exact output in your browser.
Yes. Provide Canvas width, Canvas height, Repeat width using the documented units and format shown in the quick reference table above. Preloaded default values let you test the workflow immediately.
Unrotated, unoffset rectangular repeat grid; centered leftover margins shown per edge. No staggered patterns or packing optimization. Inputs and results use floating-point numbers; output shows up to 12 significant digits. Rounding can occur. Confirm that your inputs fall within the allowed ranges before exporting the result.
Yes. All calculations for the Pattern Repeat Calculator execute 100% locally in your browser's JavaScript runtime. No inputs or results are uploaded to any external server.
Choose another tool for your next calculation, conversion, or text task.