Basic Mail is for eligible paper-based mail up to 500g. Current retail rates effective 1 January 2026: Regular S$0.62, Large S$0.90.
Disclaimer: Current retail Singapore delivery estimate based on SingPost rates checked for 2026. Eligibility depends on the actual item type, dimensions, weight, packaging and service conditions. Confirm the final rate with SingPost before posting.
Singapore Postage Calculator
Use the Singapore Postage Calculator to check the estimated cost of sending eligible mail within Singapore. Select a delivery service, choose the mail size and enter the item’s weight to see the applicable postage estimate.
The calculator uses Singapore retail postage information checked for 2026. Actual eligibility and the final price depend on the item type, dimensions, weight, packaging and selected service.
How to Use the Singapore Postage Calculator
Follow these simple steps:
- Select a Singapore delivery service.
- Choose the correct mail size.
- Enter the item’s weight in grams.
- Select Calculate Postage.
- Review the estimated postage and service information.
Measure and weigh the fully packed item—not only the letter, document or product inside it. The envelope and other packaging add to the final size and weight.
If you need help with a separate number before entering it, you can use the Online Calculator for basic calculations.
Singapore Basic Mail Rates for 2026
Singapore’s Basic Mail service is intended for eligible paper-based items such as letters, postcards and printed papers placed in suitable paper-based envelopes.
The retail rates effective from 1 January 2026 are:
- Standard Regular Mail: S$0.62
- Standard Large Mail: S$0.90
Both sizes have a maximum weight of 500g.
The maximum dimensions are:
- Regular: 240 × 162 × 6mm
- Large: 324 × 229 × 14mm
An item must meet both the size and weight conditions. A letter weighing less than 500g may still be unsuitable for Basic Mail if it is too thick, too large or not an eligible paper-based item.
Regular Mail or Large Mail?
Choose Regular only when the packed mail item stays within 240 × 162 × 6mm. Select Large when the item is bigger than the Regular limit but remains within 324 × 229 × 14mm.
Do not force a thick item into a flat envelope to obtain a lower rate. Incorrect packaging or postage may cause a delay, return or additional handling.
The calculator gives an estimate based on the selected options. SingPost makes the final decision about whether an item meets the service conditions.
Postal costs are one part of everyday household spending. You can use the Singapore Cost of Living Calculator to review broader monthly expenses separately.
What Should You Include in the Weight?
Enter the total weight of the item after it is ready to post. This normally includes:
- The letter or printed material
- The envelope
- Protective paper or card
- Labels
- Any permitted inserts
- Other allowed packaging
Using only the weight of the contents may give the wrong result. A small difference can matter when a service has a strict weight limit.
If the packed item exceeds 500g or does not meet the Basic Mail conditions, check another suitable SingPost service instead of relying on the Basic Mail estimate.
Basic Mail Tracking and Delivery
Basic Mail does not include tracking. It is generally delivered to the recipient’s letterbox.
According to SingPost’s stated service information, local letters and postcards are generally intended for delivery within one working day when posted before collection time. Printed papers generally have a two-working-day service standard.
These are service standards, not guaranteed arrival times. Weekends, public holidays, collection times, an incomplete address and operational conditions can affect delivery.
Use a service with suitable tracking or delivery features when sending an important or valuable item.
Check the Address Before Posting
Write or print the recipient’s address clearly. Include the correct six-digit Singapore postal code and make sure the address can be read easily.
It is also useful to place the sender’s return address on the envelope. This may help if the item cannot be delivered.
Before posting:
- Confirm the recipient’s full address
- Check the postal code
- Seal the envelope properly
- Use suitable packaging
- Attach enough postage
- Check the posting-box collection time
Do not send prohibited, dangerous or restricted items through an unsuitable postal service.
Immigration documents may require extra care and proof of delivery. If you are researching residency matters, our Singapore PR Points Calculator explains general published PR application factors, but it does not replace ICA requirements.
Why Can the Final Postage Be Different?
The calculator result may differ from the final amount when:
- The selected mail size is incorrect
- The packed item is thicker than expected
- The entered weight is inaccurate
- The item is not eligible for Basic Mail
- A different service is required
- SingPost changes its rates or conditions
- Extra services are added
Use a reliable scale and measure the packed item carefully. Confirm the final rate with SingPost before sending it.
Running household devices also creates costs that are unrelated to postage. The Singapore Electricity Calculator can help estimate electricity charges from usage and tariff information.
Packaging and Environmental Impact
Choose packaging that protects the contents while staying within the selected postal-service limits. Avoid unnecessary layers when a smaller, secure envelope is enough.
Lighter and correctly sized packaging may reduce material waste. To explore the broader environmental impact of everyday activities, visit the Carbon Footprint Calculator Singapore.
You can find more practical tools on the Calculator Singapores homepage.
Official Postage Reference
Postage rates and service conditions can change. Before posting, check the current dimensions, weight limits, prices and eligibility rules on the official SingPost delivery rates page.
Important Disclaimer
This calculator provides an estimated Singapore postage cost for general informational use. It is not an official SingPost calculator and is not affiliated with or endorsed by SingPost.
The final postage and service eligibility depend on the actual item type, packed dimensions, weight, packaging and current SingPost conditions. Confirm the final rate directly with SingPost before posting.
Frequently Asked Questions
What is the Singapore Basic Mail rate in 2026?
From 1 January 2026, the published retail rate is S$0.62 for Standard Regular Mail and S$0.90 for Standard Large Mail.
What is the maximum weight for Basic Mail?
The maximum published weight is 500g for eligible Regular and Large Basic Mail items. The item must also meet the applicable dimensions and service conditions.
What are the Regular Mail dimensions?
The maximum Regular Mail dimensions shown by the calculator are 240 × 162 × 6mm.
What are the Large Mail dimensions?
The maximum Large Mail dimensions shown by the calculator are 324 × 229 × 14mm.
Does Basic Mail include tracking?
No. Basic Mail does not include tracking. Consider another suitable service if tracking or proof of delivery is important.
Should I weigh the envelope too?
Yes. Enter the weight of the complete packed item, including the contents, envelope, labels and permitted packaging.
Can I use Basic Mail for a parcel?
Basic Mail has specific item, packaging, size and weight conditions. If your item is bulky, non-paper-based or unsuitable for Basic Mail, check another SingPost delivery service.
Is the calculator’s result guaranteed?
No. It is an estimate based on the information you enter. SingPost determines the final service eligibility and postage.