Categories
General & conversion
Everyday conversion and calculation tools for life in Thailand, including the rai–ngan–square wah land units used in every property listing, writing amounts in Thai words for official documents, and percentage, age and grade calculations.
17 tools in this category
Age Calculator
Exact age in years, months and days, plus days lived and the next birthday. Accepts Thai Buddhist years, and shows when you reach each Thai legal age.
Image Aspect Ratio and Resize Calculator
Find an image’s simplified ratio and the height for a new width. See exact and rounded dimensions, scale and megapixels without uploading an image.
Number to Thai Words Converter
Convert an amount into Thai words for cheques, receipts and contracts. Enter 1,234.56 and get หนึ่งพันสองร้อยสามสิบสี่บาทห้าสิบหกสตางค์, ready to copy.
File Transfer Time Calculator
Estimate upload or download duration from file size and connection speed. Choose decimal or binary file units and adjust usable throughput.
Days From a Date Calculator
Find the exact date 180, 90, 60 or 30 days from any date, or the days between two dates. Weekdays shown separately, plus Thailand’s 180-day tax rule.
Discount Calculator
Work out the price after a discount, reverse a sale price into a percentage, and decode stacked discounts: 50% off plus a further 10% is really 55% off, not 60%.
Farm Cost and Profit per Rai Calculator
Work out revenue, cost and profit per rai for rice or field crops from yield, selling price, moisture deduction and itemised costs, plus the break-even price and yield.
GPA Calculator (Thai Grading System)
Work out a GPA from credits and grades on the Thai A to F scale, add your previous GPAX for the cumulative average, and check the honours thresholds.
Thai Land Area Converter
1 rai = 1,600 m², about 0.4 acres. Convert rai, ngan and square wah to square metres both ways, read a 1-2-50 deed, and value a plot per square wah.
Thailand Overstay Fine Calculator
The fine for overstaying in Thailand is 500 baht a day, capped at 20,000 baht — reached at 40 days. Rate published by the Immigration Bureau.
Parcel Volumetric Weight Calculator
Work out a box's volumetric weight from length × width × height ÷ the carrier's divisor, compare it with actual weight and find the chargeable weight with step rounding and an estimated shipping cost.
Percentage Calculator
Five calculations in one: X% of a number, the price after a discount, A as a share of B, percentage change, and the original price before a discount.
TCAS Weighted Admission Score Calculator
Combine up to six parts such as GPAX, TGAT, TPAT and A-Level using the weights a faculty publishes, convert them to a score out of 100 and see how much each part contributes.
Thailand Trip Budget Calculator
Plan your Thailand trip using your own prices. Separate room nights, daily spending, flights, contingency and prepaid costs, with totals per person and day.
Thailand Trip Expense Splitter
Split shared trip expenses in Thai baht for 2–8 people. Choose equal or weighted shares, enter payments and see who pays whom, with exact satang reconciliation.
Tip and Bill Split Calculator
Add a percentage tip and split the bill equally. See the tip, total and a last-person rounding adjustment so all payments add up exactly.
Thai Year to English Year Converter
Convert a Thai year to an English year and back — 2559 is 2016, subtract 543. Year-by-year table, plus the exception that catches documents before 1941.