Finished size of a cross-stitch design and the fabric to cut, from stitches wide/high, fabric count and margin.

Convert a knitting or crochet stitch count from the pattern's gauge to yours, with the finished width in inches.

Rates for up to 10 currencies against one base at once, with each one's 30-day change, strongest and weakest first.

Cut size of squares for half-square triangles (two-at-a-time or four-at-a-time) from the finished size, in eighths.

Currency pair move over 7-365 days: percent change, high, low, annualized volatility and where today sits in the range.

ECB reference exchange rate on a past date (since 1999) and the change since then; weekends use the prior working day.

Growing degree days from daily lows and highs with a base temperature and upper cutoff: daily and cumulative totals.

Plants that fit a bed at a spacing (grid or offset rows) and seeds to sow from germination rate, per bed and per square foot.

Soil or mulch for a rectangular or round bed: cubic feet, yards, litres, bags, settling allowance and a mix split by parts.

Planting calendar from your frost date: dates for tasks given as weeks before or after, such as seeds indoors 6 weeks before.

GPA on the 4.0 scale from letter grades and credits, with optional honors (+0.5) and AP/IB (+1.0) weighting.

Latest ECB reference exchange rate for a currency pair, with the inverse and the fixing date.

Percentile rank of a score in a class list (mean-rank method), with rank from the top, mean, median and z-score.

Curve test scores by adding points, scaling so the top score is 100, or the square-root method, with before and after averages.

Letter grade and 4.0 GPA points for a percentage on the common US scale, with plus/minus, and points to the next grade.

Drip irrigation math: gallons for inches of water over an area, emitter flow, supply limit and run time per watering.

Fertilizer product needed for a nutrient target per 1000 sq ft from its N-P-K analysis, with the P and K delivered and bags.

Frost or freeze class of a forecast low against plant hardiness, plus where a date sits against your average frost dates.

Score needed on a final exam (or any remaining work) to reach a target class grade, from current grade and its weight.

Carbon-to-nitrogen ratio of a compost mix by the Cornell formula, or the greens-to-browns amounts that reach a target ratio.