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CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Negotiate Your Salary

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Mechanical Engineers Outlook

Guide for those interested in becoming a mechanical engineer. Includes qualifications, pay, and job duties.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

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Convert  São Tomé and Príncipe Dobra (STD)  
(as of 2026-07-10 18:00:00)  1 São Tomé and Príncipe Dobra (STD) =
  ISO Currency
0.0031  AFN Afghan Afghani 
0.004  ALL Albanian Lek 
0.0064  DZD Algerian Dinar 
0.044  AOA Angolan Kwanza 
0.072  ARS Argentine Peso 
0.018  AMD Armenian Dram 
0.000087  AWG Aruban Florin 
0.000069  AUD Australian Dollar 
0.000082  AZN Azerbaijani Manat 
0.000048  BSD Bahamian Dollar 
0.000018  BHD Bahraini Dinar 
0.006  BDT Bangladeshi Taka 
0.000097  BBD Barbadian Dollar 
0.95  BYR Belarusian Ruble 
0.000097  BZD Belize Dollar 
0.000048  BMD Bermudan Dollar 
0.0046  BTN Bhutanese Ngultrum 
0.00000000076  BTC Bitcoin 
0.00033  BOB Bolivian Boliviano 
0.000083  BAM Bosnia-Herzegovina Convertible Mark 
0.00065  BWP Botswanan Pula 
0.00025  BRL Brazilian Real 
0.000036  GBP British Pound Sterling 
0.000062  BND Brunei Dollar 
0.000082  BGN Bulgarian Lev 
0.14  BIF Burundian Franc 
0.19  KHR Cambodian Riel 
0.000068  CAD Canadian Dollar 
0.0047  CVE Cape Verdean Escudo 
0.000087  XCG Caribbean Guilder 
0.00004  KYD Cayman Islands Dollar 
0.028  XOF CFA Franc BCEAO 
0.028  XAF CFA Franc BEAC 
0.0051  XPF CFP Franc 
0.045  CLP Chilean Peso 
0.0000011  CLF Chilean Unit of Account (UF) 
0.00033  CNY Chinese Yuan 
0.00033  CNH Chinese Yuan Offshore 
0.16  COP Colombian Peso 
0.021  KMF Comorian Franc 
0.11  CDF Congolese Franc 
0.022  CRC Costa Rican Colón 
0.00032  HRK Croatian Kuna 
0.000048  CUC Cuban Convertible Peso 
0.0013  CUP Cuban Peso 
0.001  CZK Czech Republic Koruna 
0.00032  DKK Danish Krone 
0.0086  DJF Djiboutian Franc 
0.0028  DOP Dominican Peso 
0.00013  XCD East Caribbean Dollar 
0.0024  EGP Egyptian Pound 
0.00072  ERN Eritrean Nakfa 
0.0077  ETB Ethiopian Birr 
0.000042  EUR Euro 
0.000036  FKP Falkland Islands Pound 
0.00011  FJD Fijian Dollar 
0.0036  GMD Gambian Dalasi 
0.00013  GEL Georgian Lari 
0.00055  GHS Ghanaian Cedi 
0.000036  GIP Gibraltar Pound 
0.000000012  XAU Gold (troy ounce) 
0.00037  GTQ Guatemalan Quetzal 
0.000036  GGP Guernsey Pound 
0.42  GNF Guinean Franc 
0.01  GYD Guyanaese Dollar 
0.0063  HTG Haitian Gourde 
0.0013  HNL Honduran Lempira 
0.00038  HKD Hong Kong Dollar 
0.015  HUF Hungarian Forint 
0.0061  ISK Icelandic Króna 
0.0046  INR Indian Rupee 
0.87  IDR Indonesian Rupiah 
66.42  IRR Iranian Rial 
0.063  IQD Iraqi Dinar 
0.00015  ILS Israeli New Sheqel 
0.0076  JMD Jamaican Dollar 
0.0078  JPY Japanese Yen 
0.000036  JEP Jersey Pound 
0.000034  JOD Jordanian Dinar 
0.023  KZT Kazakhstani Tenge 
0.0062  KES Kenyan Shilling 
0.000015  KWD Kuwaiti Dinar 
0.0042  KGS Kyrgystani Som 
1.09  LAK Laotian Kip 
0.000029  LVL Latvian Lats 
4.33  LBP Lebanese Pound 
0.00079  LSL Lesotho Loti 
0.0088  LRD Liberian Dollar 
0.00031  LYD Libyan Dinar 
0.00014  LTL Lithuanian Litas 
0.00039  MOP Macanese Pataca 
0.0026  MKD Macedonian Denar 
0.21  MGA Malagasy Ariary 
0.084  MWK Malawian Kwacha 
0.0002  MYR Malaysian Ringgit 
0.00075  MVR Maldivian Rufiyaa 
0.000036  IMP Manx pound 
0.0019  MRU Mauritanian Ouguiya 
0.0023  MUR Mauritian Rupee 
0.00084  MXN Mexican Peso 
0.00085  MDL Moldovan Leu 
0.17  MNT Mongolian Tugrik 
0.00045  MAD Moroccan Dirham 
0.0031  MZN Mozambican Metical 
0.10  MMK Myanma Kyat 
0.00079  NAD Namibian Dollar 
0.0074  NPR Nepalese Rupee 
0.000087  ANG Netherlands Antillean Guilder 
0.00014  BYN New Belarusian Ruble 
0.0016  TWD New Taiwan Dollar 
0.000084  NZD New Zealand Dollar 
0.0018  NIO Nicaraguan Córdoba 
0.067  NGN Nigerian Naira 
0.043  KPW North Korean Won 
0.00047  NOK Norwegian Krone 
0.000019  OMR Omani Rial 
0.013  PKR Pakistani Rupee 
0.000048  PAB Panamanian Balboa 
0.00021  PGK Papua New Guinean Kina 
0.29  PYG Paraguayan Guarani 
0.00016  PEN Peruvian Nuevo Sol 
0.003  PHP Philippine Peso 
0.00018  PLN Polish Zloty 
0.00018  QAR Qatari Rial 
0.00022  RON Romanian Leu 
0.0037  RUB Russian Ruble 
0.071  RWF Rwandan Franc 
0.000036  SHP Saint Helena Pound 
0.00042  SVC Salvadoran Colón 
0.00013  WST Samoan Tala 
0.001  STN São Tomé and Príncipe Dobra 
0.00018  SAR Saudi Riyal 
0.005  RSD Serbian Dinar 
0.00071  SCR Seychellois Rupee 
0.0012  SLE Sierra Leonean Leone 
1.01  SLL Sierra Leonean Leone 
0.00000081  XAG Silver (troy ounce) 
0.000062  SGD Singapore Dollar 
0.00039  SBD Solomon Islands Dollar 
0.028  SOS Somali Shilling 
0.0008  ZAR South African Rand 
0.072  KRW South Korean Won 
0.029  SDG South Sudanese Pound 
0.034  VES Sovereign Bolivar 
0.000034  XDR Special Drawing Rights 
0.016  LKR Sri Lankan Rupee 
0.0018  SRD Surinamese Dollar 
0.00079  SZL Swazi Lilangeni 
0.00047  SEK Swedish Krona 
0.000039  CHF Swiss Franc 
0.0053  SYP Syrian Pound 
0.00045  TJS Tajikistani Somoni 
0.13  TZS Tanzanian Shilling 
0.0016  THB Thai Baht 
0.00012  TOP Tongan Paʻanga 
0.00033  TTD Trinidad and Tobago Dollar 
0.00014  TND Tunisian Dinar 
0.0023  TRY Turkish Lira 
0.00017  TMT Turkmenistani Manat 
0.18  UGX Ugandan Shilling 
0.0022  UAH Ukrainian Hryvnia 
0.00018  AED United Arab Emirates Dirham 
0.000048  USD United States Dollar 
0.0019  UYU Uruguayan Peso 
0.58  UZS Uzbekistan Som 
0.0058  VUV Vanuatu Vatu 
1.27  VND Vietnamese Dong 
0.011  YER Yemeni Rial 
0.00087  ZMW Zambian Kwacha 
0.43  ZMK Zambian Kwacha (pre-2013) 
0.016  ZWL Zimbabwean Dollar 
Glossary
FREE Publications
CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

Mechanical Engineers Outlook

Guide for those interested in becoming a mechanical engineer. Includes qualifications, pay, and job duties.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

more publications